US PATENT SUBCLASS 525 / 53
.~.~ Utilizing an apparatus with two or more physically distinct zones

Current as of: June, 1999
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525 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {4}
50  DF  .~ MIXING OF TWO OR MORE SOLID POLYMERS; MIXING OF SOLID POLYMER OR SICP WITH SICP OR SPFI; MIXING OF SICP WITH AN ETHYLENIC AGENT; MIXING OF SOLID POLYMER WITH A CHEMICAL TREATING OR ETHYLENIC AGENT; OR PROCESSES OF FORMING OR REACTING; OR THE RESULTANT PRODUCT OF ANY OF THE ABOVE OPERATIONS {32}
53.~.~ Utilizing an apparatus with two or more physically distinct zones

DEFINITION

Classification: 525/53

Utilizing an apparatus with two or more physically distinct zones:

(under subclass 50) Subject matter wherein a reaction is effected in at least two or more physically distinct zones (e.g., regions, stages, etc.), said zones being part of a single reactor which has a plurality of such physically distinct zones or such zones may be part of separate reactors which are interconnected at some point.

(1) Note. For the most part, the patents herein relate to advancement of materials from one zone to another so as to effect progressive degree of reaction and which are usually advanced until the degree of reaction is brought to the desired state.